:root {
  --green-deepest: #0B3D2E;
  --green-dark: #14483A;
  --night: #0A1F44;
  --orange: #FF6B2D;
  --gold: #F5B700;
  --white: #F7F8FA;
  --gray: #AAB4C0;
  --line-green: #3FA976;
  --shadow-ink: #0D1117;
  --ivory: #FFF8E7;
  --font-head: 'Chakra Petch', 'Microsoft YaHei', sans-serif;
  --font-body: 'Microsoft YaHei', 'PingFang SC', sans-serif;
  --font-accent: 'Georgia', 'Times New Roman', serif;
  --container: 1280px;
  --radius: 16px;
  --transition: .3s ease;
  --shadow-panel: 0 14px 34px rgba(0, 0, 0, .28);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--white);
  line-height: 1.7;
  background:
    radial-gradient(880px 480px at 88% -60px, rgba(10, 31, 68, .55) 0%, transparent 70%),
    radial-gradient(720px 420px at -80px 30%, rgba(63, 169, 118, .12) 0%, transparent 65%),
    var(--green-deepest);
  min-height: 100vh;
}

img, svg, video {
  max-width: 100%;
  display: block;
}

ul, ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
  cursor: pointer;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.2;
}

::selection {
  background: var(--orange);
  color: var(--green-deepest);
}

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  width: min(100% - 40px, var(--container));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -64px;
  z-index: 200;
  background: var(--orange);
  color: #fff;
  padding: 10px 22px;
  border-radius: 0 0 12px 12px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 14px;
  transition: top .3s ease;
}

.skip-link:focus {
  top: 0;
}

.route-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 300;
  background: linear-gradient(90deg, var(--orange) 0%, var(--gold) 100%);
  transform: scaleX(0);
  transform-origin: left center;
  opacity: .9;
  pointer-events: none;
}

.site-header {
  position: relative;
  z-index: 100;
  background: linear-gradient(180deg, var(--green-deepest) 0%, #0D4634 100%);
  border-bottom: 1px solid rgba(63, 169, 118, .35);
}

.site-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  z-index: 1;
  background: repeating-linear-gradient(90deg,
    var(--orange) 0 56px,
    var(--gold) 56px 112px,
    var(--line-green) 112px 168px,
    var(--night) 168px 224px);
  pointer-events: none;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 92px;
  padding-block: 14px;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  background: var(--orange);
  color: var(--green-deepest);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 26px;
  line-height: 1;
  border-radius: 12px 4px 12px 4px;
  box-shadow: inset 0 -3px 0 rgba(0, 0, 0, .18);
  transition: transform .25s ease;
}

.brand-block:hover .brand-mark {
  transform: rotate(-4deg) scale(1.03);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: .02em;
}

.brand-tagline {
  font-size: 12px;
  color: var(--gray);
  letter-spacing: .14em;
  margin-top: 2px;
}

.site-nav {
  margin: 0 auto;
}

.nav-list {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 2px;
}

.nav-list::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 22px;
  right: 22px;
  height: 2px;
  background-image: radial-gradient(circle, var(--line-green) 1.5px, transparent 1.5px);
  background-size: 12px 12px;
  opacity: .55;
  pointer-events: none;
}

.nav-link {
  position: relative;
  display: block;
  padding: 14px 16px 12px;
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
  transition: color .2s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 50%;
  width: 9px;
  height: 9px;
  transform: translateX(-50%) rotate(45deg);
  background: var(--line-green);
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
}

.nav-link:hover {
  color: var(--orange);
}

.nav-link:hover::after {
  background: var(--orange);
  transform: translateX(-50%) rotate(45deg) scale(1.25);
}

.nav-link[aria-current="page"] {
  color: var(--gold);
}

.nav-link[aria-current="page"]::after {
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(245, 183, 0, .2);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .04em;
  padding: 12px 24px;
  border-radius: 10px;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
}

.btn-primary {
  background: var(--orange);
  color: #fff;
  box-shadow: 0 4px 0 #B8430F;
}

.btn-primary:hover {
  background: #FF8350;
  transform: translateY(-2px);
  box-shadow: 0 6px 0 #B8430F;
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 2px 0 #B8430F;
}

.btn-ghost {
  border: 1.5px solid var(--line-green);
  color: var(--white);
  background: rgba(63, 169, 118, .08);
}

.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.header-cta {
  margin-left: auto;
  flex-shrink: 0;
}

.header-cta::after {
  content: '→';
  display: inline-block;
  transition: transform .2s ease;
}

.header-cta:hover::after {
  transform: translateX(4px);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border: 1.5px solid rgba(63, 169, 118, .5);
  border-radius: 10px;
  transition: border-color .2s ease;
}

.nav-toggle:hover {
  border-color: var(--orange);
}

.nav-toggle-bar {
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--white);
  transition: transform .3s ease, opacity .3s ease;
}

.nav-toggle.is-open .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-open .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-footer {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--night) 0%, #071633 100%);
  color: var(--white);
  margin-top: 72px;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: repeating-linear-gradient(90deg,
    var(--orange) 0 60px,
    var(--gold) 60px 140px,
    transparent 140px 220px);
  opacity: .8;
}

.site-footer::after {
  content: '';
  position: absolute;
  right: -90px;
  bottom: -90px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245, 183, 0, .10) 0%, transparent 70%);
  pointer-events: none;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 48px;
  padding: 56px 0 40px;
  position: relative;
  z-index: 1;
}

.footer-brand {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.footer-brand-mark {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  background: var(--gold);
  color: var(--night);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 22px;
  line-height: 1;
  border-radius: 12px 3px 12px 3px;
}

.footer-name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
}

.footer-tagline {
  color: var(--gray);
  font-size: 13px;
  letter-spacing: .12em;
  margin-top: 4px;
}

.footer-columns {
  display: grid;
  grid-template-columns: 1fr 1fr 1.4fr;
  gap: 32px;
}

.footer-col li {
  margin-bottom: 8px;
  font-size: 14px;
  line-height: 1.6;
}

.footer-heading {
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 14px;
  padding-left: 14px;
  position: relative;
}

.footer-heading::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  background: var(--orange);
  border-radius: 1px;
  transform: translateY(-50%) rotate(45deg);
}

.footer-nav a,
.footer-links a {
  color: #C9D3DC;
  font-size: 14px;
  transition: color .2s ease, padding-left .2s ease;
}

.footer-nav a:hover,
.footer-links a:hover {
  color: var(--orange);
  padding-left: 6px;
}

.footer-contact li {
  color: var(--gray);
}

.footer-bottom {
  position: relative;
  z-index: 1;
  border-top: 1px dashed rgba(63, 169, 118, .3);
  padding: 20px 0 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  align-items: center;
  font-size: 13px;
  color: var(--gray);
}

.footer-trust {
  margin-left: auto;
  font-family: var(--font-accent);
  font-style: italic;
  color: var(--ivory);
}

.section-panel {
  position: relative;
  background:
    linear-gradient(180deg, rgba(63, 169, 118, .06) 0%, transparent 40%),
    var(--green-dark);
  border: 1px solid rgba(63, 169, 118, .28);
  border-radius: var(--radius);
  padding: clamp(26px, 4.5vw, 52px);
  box-shadow: var(--shadow-panel);
  overflow: hidden;
}

.section-panel::before {
  content: '';
  position: absolute;
  left: 0;
  top: 32px;
  bottom: 32px;
  width: 5px;
  border-radius: 0 5px 5px 0;
  background: var(--orange);
}

.section-panel::after {
  content: attr(data-index);
  position: absolute;
  right: 20px;
  top: 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(48px, 7vw, 96px);
  line-height: 1;
  color: rgba(63, 169, 118, .10);
  pointer-events: none;
}

.section-head {
  margin-bottom: 24px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 8px;
}

.section-tag::before {
  content: '';
  width: 10px;
  height: 10px;
  background: var(--orange);
  border-radius: 1px;
  transform: rotate(45deg);
}

.section-title {
  font-size: clamp(22px, 3vw, 32px);
  letter-spacing: .01em;
}

.section-desc {
  color: var(--gray);
  margin-top: 8px;
  max-width: 560px;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--gray);
  padding: 18px 0;
}

.breadcrumbs a {
  transition: color .2s ease;
}

.breadcrumbs a:hover {
  color: var(--orange);
}

.breadcrumbs .sep {
  color: var(--line-green);
}

.breadcrumbs [aria-current="page"] {
  color: var(--gold);
  font-weight: 500;
}

.media-frame {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid rgba(63, 169, 118, .3);
  background:
    linear-gradient(135deg, rgba(63, 169, 118, .15) 0%, transparent 50%),
    linear-gradient(180deg, #0D4634 0%, #0B2017 100%);
}

.media-frame::before {
  content: attr(data-label);
  position: relative;
  z-index: 1;
  font-family: var(--font-head);
  font-size: 14px;
  letter-spacing: .08em;
  color: var(--gray);
  opacity: .85;
  text-align: center;
  padding: 0 16px;
}

.media-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(63, 169, 118, .08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(63, 169, 118, .08) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: .6;
  pointer-events: none;
}

.media-frame--square {
  aspect-ratio: 1 / 1;
}

.media-frame--portrait {
  aspect-ratio: 3 / 4;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.data-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  color: var(--gold);
  background: rgba(245, 183, 0, .12);
  border: 1px solid rgba(245, 183, 0, .35);
  border-radius: 999px;
  padding: 5px 12px;
}

.data-chip--orange {
  color: var(--orange);
  background: rgba(255, 107, 45, .12);
  border-color: rgba(255, 107, 45, .35);
}

.route-list li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 10px;
}

.route-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 10px;
  border: 2px solid var(--orange);
  border-radius: 50%;
  background: var(--green-deepest);
  transition: background .2s ease;
}

.route-list li:hover::before {
  background: var(--orange);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .55s ease, transform .55s ease;
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

@media (max-width: 1024px) {
  .header-inner {
    gap: 16px;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: linear-gradient(180deg, #0D4634 0%, var(--green-deepest) 100%);
    border-top: 1px solid rgba(63, 169, 118, .35);
    padding: 8px 24px 18px;
    margin: 0;
    box-shadow: 0 24px 40px rgba(0, 0, 0, .45);
  }

  .site-nav[data-open="true"] {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    gap: 0;
  }

  .nav-list::before {
    display: none;
  }

  .nav-link {
    padding: 12px 4px;
    font-size: 16px;
    border-bottom: 1px solid rgba(63, 169, 118, .14);
  }

  .nav-link::before,
  .nav-link::after {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .header-cta {
    margin-left: auto;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 48px 0 32px;
  }
}

@media (max-width: 720px) {
  .footer-columns {
    grid-template-columns: 1fr 1fr;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .grid-4 {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 560px) {
  .brand-tagline {
    display: none;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
    font-size: 22px;
  }

  .brand-name {
    font-size: 15px;
  }

  .header-cta {
    padding: 10px 14px;
    font-size: 13px;
  }

  .footer-columns {
    grid-template-columns: 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-trust {
    margin-left: 0;
  }

  .section-panel::after {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .route-progress {
    display: none;
  }
}